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Routing Information Protocol (RIP)

The simplest and the most widespread classful distance vector routing protocol is the Routing Information Protocol (version 1). RIP uses hop count as its metric for path selection. Hop counts greater than 15 are marked as unreachable and broadcast messages every 30 seconds. RIP being classful does not send subnet mask in its update. Default administrative distance is 120. RIP Version 1 does not support classless (discontiguous) networks or VLSM instead RIP Version 2 support these